Valve.



H. E. BARR & C. WAINWRIGHT.

. VALVE. APPLICATION FILED AUG. 1a, 190s.

. 955,043. v Patented Apr.12,1910.

vente@ @Minuut Y To all 'who/rn valve of the automatic lift ty closingoperation Y which has passed beyond 5 designates the mirri-1D srirrnsPATENT orricn.

HARRY EDSIL BARR AND CHARLES WAINWRIGHT, F ERIE, PENNSYLVANIA.

VALVE.

speciaeanon of Letters Patent. Patented Apr. 12, k1910.

Application led `August 18, 1908. Serial No. 449,100.

with a snug sliding t in a valve ide 6 of cylindrical form correspondingwith the form of the valve, said valve being provided with a mainconicalworking .face 7 while on the side next to the compressioncylinder, said valve is provided with a shallow or narpreclosure face 8just sufit may concern."

Be it known that we, HARRY EDsrL BARR and CHARLES WAiNwRiGn'r, citizensof the United States, residin at Erie,inthe county of Erie and State ofennsylvania, have invented new and usef ul Improvements in Valves, ofwhich the following is a specification.

This invention relates to valves, the obj ect of the invention being toproduce a discharge e for air compressors andthe like, which is socushioned in operation that a considerable degree of lift may beimparted thereto thus securing the full area of thevalve opening, whilethe ered positive operation of the valve is rend on account of thecushioning] effect obtained a cushion -chamber and piston or head and a.preclosure face, which combined, act to' overcome an tend of the valveto dance or chatter on the valve seat during the also preventing the airthe valve .from

row cylindrical cient to fill the p immediately before 7 comes incontact with which is also cone-shaped to agree withthe working face of'the valve. The air passing through the port 2 and getting by the valve 5finds its exit through one or more openings 10 in the guide 6 into thechamber or discharge space width Sufficient to close the ports 10 whichlead into an-air discharge space 4 between the cylinder wall l and theouter` wall 3 of said space.

'portion thereo iowing back into the'compressin cylinder, wall 3. Thecap 11 is screwed upon the the result being avalve prticulary adaptedouter end' of the valve guide 6 and has a to quite. high speed worhollow cylindrical central portion 12 which A further ob]ect of theinvention is to proextends well into the valve guide 6, the exvide aconstruction whereby the operation o tremev inner portion thereof beingreduced the valve will not be effected or impaire by as shown at 13. Thevalve 5 is provided any dirt finding its'way under the valve cap with astem 14 upon the outer end of which ion chamber is of less diameter thanthe portingenc so that the valve may readily actions 12 and 13 abovedescribed so as to leave comino ateitself to the valve seat and work 16to adjust itsel f to the valve stem 14: re-` ardless of the position ofthe cap the nature of which will more fully appear 11 as to as thedescription procee s, the invention consists in the novel construction,combinawhether the latter is exactly centered or not. tion andarrangement of arts as hereinafter The outer en ofthe cushion chamber isdescribed, illustrated an claimed. closed by means of aiplug 19 whichscrews The accompanying draw'ng represents a into the cap 11 and sealsthe outer end o chamber. Air is admitted from into the space 20 beneaththe piston 15 by means of ports formedv respectivel the cushion thespace 4 cushionhead or 21, 22, and 23, guide 6 the part 12 of the 'cap'and the cushion chamber 24 designates sectional view o presentinvention.

In the accompanying drawings, nates the wall of a valve embodying the 1desigthe cylinder in which the air compressin piston operates, saidwallbeingrovided with a port 2 leading to the valve of this invention,and 3 designates the the valve closing spring which is interposedbetween outer wall of the compressed air chamber the valve 5 and the cap11. l

I which leads to a suitable storage tank 4 des- By means of theconstruction just deignating such compressed air passage which scribed,the inner cushion chamber is adaptp surrounds the valve and its guide.ed to adjust itself tothe valve 5 and center valve which is mounteditself with stem of said valve relation to the is screwed into the outerwith perfect freedom. anintervening annular space as shown at 17 Withthe above and'other objects in view, 'and 18 thereby adapting the innermem The cylindrical face of the valve is of al bbeted v or by reason othe wabbling of the walls is secured a cushion head or piston 15 whichof the valve cap, the construction hereinafter has a snug sliding fit ina self-adjusting cap described makin allowance for such con- 16 formingthe cushion chamber. This cus f thus insuring the easy working of thecushion head or piston connected with said valve.

` e claim:

A valve comprising a valve guide, a 5 valve embodying a cylindrical bodymounted to slide within the fvalve ide 'and also provided with afrusta-conica workinfg face ace a ed yto slide within the valve ide andalso provided with a frusto-conicarll a cushion head or piston carriedby said vided with a central hollow cylindrical or# 25 the head orpiston works, an a plug removr ably fitted in the outer end of the capand 30 serving to hold .the cushion chamber in place, substantiall asdescribed.I In testimony whereof we ax our signa- 10 a cap fitted tosaid guide and provided with a central hollow cylindrical portion which`extends into' the valve guide, a cup-shaped cushion chamber removablytted`in said cap, in which cushion chamber the head or turcs 1n presenceof two witnesses.

15 piston works 'and a plug removably tted in' H: EDS-IL BARR.

the outer endmof the cap and serving to hold t e cushion chamber 1nplace, substantially I CHARLES WAINWRIGHT' as described. p Witnesses: 2.A valve comprising a valve guide, a FRED J. CARNEY, 20 valve embodying acylindrical body mount- F. R. GILL, Jr.'

